Department officials released dramatic store security video of the last seconds before Amanda and Jerad Miller died.

It includes a security officer's narration of her appearing to shoot him and then herself.

The deaths have been ruled a murder and a suicide.

(Copyright 2014 The Associated Press. )

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Las Vegas police officers who normally patrol alone are being paired as a precaution following yesterday's deadly ambush that left claimed the lives of two veteran officers.

They were gunned down as they were having lunch at a pizzeria, in an older strip mall about five miles from the Las Vegas Strip.

They were shot at point-blank range by a man and a woman. One of them was heard to shout "This is a revolution."

Police say they don't have a motive for the rampage. One of the officers was able to fire back but it's unclear if he was able to hit them.

They fled across the street to a Wal-Mart, where a customer was gunned down just inside the floor. A gunbattle with officers followed and the woman fatally shot the other shooter and then herself.

Police say the case is complex because there are so many witnesses.

The officers were married and had children.

Wal-Mart expressed its condolences in a statement and said that the company is working with police on the investigation. Cici's Pizza said in a statement the company was deeply saddened by the shooting and would keep the location closed until further notice.

(Copyright 2014 The Associated Press. All rights reserved.)

Previous StoryAuthorities say two suspects shot and killed two police officers at a Las Vegas eatery Sunday before fatally shooting a third person and killing themselves inside a nearby Walmart.

Gov. Brian Sandoval issued a statement saying he was devastated by the murders of the two officers and an "innocent bystander."

Las Vegas police spokesman Larry Hadfield says the spree began late Sunday morning when a man and woman walked into CiCi's Pizza and shot two officers who were eating lunch.

He says the suspects then fled to the Walmart across the street, where they fatally shot a person inside and then killed themselves in an apparent suicide pact.

The spree began around 11:30 a.m. Sunday when a man and woman walked into CiCi's Pizza and shot two officers who were eating lunch, Las Vegas police spokesman Larry Hadfield said.

One of the suspects yelled, "This is a revolution," but the motive for the shooting remains under investigation, Hadfield said.

The two suspects then fled to the Walmart across the street, where they fatally shot a person inside and then killed themselves in an apparent suicide pact, Hadfield said.

The condition of the two officers was not immediately known, he said, but an update would be provided later Sunday.

"I think in any case where people are ambushed and shot it's upsetting to the public," Hadfield told The Associated Press. "We don't know anything about the suspects yet and are trying to learn more."

Clark County Assistant Sheriff Kevin McMahill said at a news conference that the male suspect yelled "everyone get out" before shooting at Walmart. The man and woman then went to the back of the store.

The names of the suspects and victims and their cause of death will be released by the Clark County coroner's office.

Walmart employees and shoppers were taken to a nearby clothing store to be interviewed by police. The restaurant and Walmart remained closed as detectives processed evidence.

Walmart issued a statement saying it's working with police on the investigation.

"We express our deepest condolences to everyone who has been affected by this senseless act of violence," company spokesman Brooke Buchanan said.

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